1 - I need waveform displays which update at the rate of the note - for example, so that a steady waveform appears steady, and changes in pitch look like expansions and contractions rather than looking messy on notes that aren't harmonically related to the update rate. There are two ways I can think of doing this - the first is using zero crossing and tends to be glitchy with complex waves - the second is to use a MIDI input to get the clock frequency direct from the part being viewed. Another way might be pitch detection but I've no idea how that works.
2 - I'd like to construct lissajous figures to show the relationship between a stream of two notes. This would need two waveform feeds and one would govern x movenent and one y. If you've not seen these figures, they show a geometric beauty related to musical intervals and are very beautiful.
This is a long shot but if anyone has any ideas I'd be extremely grateful to hear them
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